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EP0348378A1 - Articulated device for guiding and sustaining a railway vehicle - Google Patents

Articulated device for guiding and sustaining a railway vehicle Download PDF

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Publication number
EP0348378A1
EP0348378A1 EP89870098A EP89870098A EP0348378A1 EP 0348378 A1 EP0348378 A1 EP 0348378A1 EP 89870098 A EP89870098 A EP 89870098A EP 89870098 A EP89870098 A EP 89870098A EP 0348378 A1 EP0348378 A1 EP 0348378A1
Authority
EP
European Patent Office
Prior art keywords
pivot
articulated
spar
vertical
pivoting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89870098A
Other languages
German (de)
French (fr)
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EP0348378B1 (en
Inventor
Michel De Ro
Christian Terreur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BN Constructions Ferroviaires et Metalliques SA
Original Assignee
BN Constructions Ferroviaires et Metalliques SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by BN Constructions Ferroviaires et Metalliques SA filed Critical BN Constructions Ferroviaires et Metalliques SA
Priority to AT89870098T priority Critical patent/ATE67720T1/en
Publication of EP0348378A1 publication Critical patent/EP0348378A1/en
Application granted granted Critical
Publication of EP0348378B1 publication Critical patent/EP0348378B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
    • B61F5/44—Adjustment controlled by movements of vehicle body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B61F3/16—Types of bogies with a separate axle for each wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
    • B61F5/42—Adjustment controlled by buffer or coupling gear

Definitions

  • the present invention relates to an articulated device for guiding and supporting a railway vehicle, a device consisting of a deformable support equipped with at least four independent wheels and comprising a horizontal cross member secured to the body of the vehicle so as to be perpendicular to the longitudinal axis of the body in the vicinity of one end of this body as well as two side members, each provided with at least two wheels and articulated on the cross member on either side of the axial vertical plane so as to be able pivot horizontally and tilt to allow the wheels carried by the side members to follow the curvatures of the track and to overcome the unevenness of the latter.
  • a large number of lifting devices for railway vehicles are already known which are capable of ensuring the dynamic stability of these vehicles, both in rectilinear trajectory and in curved trajectory.
  • European patent n ° 0060 000 describes a device for supporting and guiding a railway vehicle, equipped with at least four wheels mounted on a support intended to be secured to the body of a vehicle, in the vicinity of one end of this body.
  • This device consists of a crosspiece held perpendicular to the vertical plane containing the longitudinal axis of the vehicle and two side rails arranged, in the service position, in the longitudinal direction of the body, on either side of the above-mentioned axial vertical plane. .
  • These beams are connected to each other by means of a rod mounted on ball joints. They are articulated on the common crosspiece by vertical pivots capable of taking a certain inclination in a substantially vertical longitudinal plane.
  • These pivots are connected to each other by ball joints and a lifter secured to the cross member by means of a pivot perpendicular to the plane formed by the cross member and the longitudinal axis of the vehicle.
  • the side members pivot relative to the cross member around the substantially vertical pivots and form the opposite sides of a deformable trapezoid, while the cross member remains perpendicular to the longitudinal axis of the vehicle body.
  • Each of the two longitudinal members carrying the independent wheels consists of two sections articulated around vertical pivots, each section carrying at least one wheel and being controlled directionally by a system of rods mounted with ball joints.
  • each spar pivot with respect to the cross member and with respect to each other and they form the sides of two deformable trapezoids, while the crosspiece remains perpendicular to the vehicle body, the advantage of this device compared to the previous one being that it orientates each wheel tangentially to the portion of track on which it rests.
  • the side members pivot horizontally around two separate pivots and it follows that the distances between the planes of the left and right wheels progressively decrease from the start of straight line traffic to reach, in tight curves, incompatible values with those of the track.
  • Driving on tracks with a small radius of curvature, with grooved rails and unworn wheels is therefore impossible without creating jams and risking derailments.
  • the present invention aims to remedy the aforementioned drawback. It proposes a device which makes it possible to move the articulation pivots away from the two longitudinal members in order to compensate for the loss of spacing of the longitudinal members due to the deflection of the latter when the vehicle is registered in a curve and which returns the pivots of articulation aforesaid to their initial position when the vehicle leaves a curve to engage on a straight line.
  • It relates to a device for guiding and supporting a railway vehicle consisting of a deformable support with independent wheels capable of pivoting around vertical axes so as to be oriented in pairs or independently of one another depending on the section of track on which they are based.
  • the cross member comprises at least one articulated element carrying one of the hinge pivot pivots.
  • the longitudinal members can be rigid or consist of sections articulated together around substantially vertical pivots, each section carrying at least one wheel, a section of each longitudinal member being mounted on the cross member by an articulated element.
  • one of the articulated elements comprises two separate vertical pivots, the first allowing the directional orientation of the spar relative to the articulated element, the second pivot allowing the pivoting of the cross member relative to the element articulated, and a means provided for receiving information and transmitting it to the articulated element so as to allow the correction of the distance between the vertical planes containing the wheels of each of the side members, when the device is registered in a curve.
  • An articulated element may for example consist of a crankshaft with vertical axes having a main pivot pivoting in the cross member, a crank pivoting in a rigid spar or a spar section, and another crank disposed substantially at 180 °, carrying a connecting rod ball joint mounted and extending substantially transversely to the vehicle, the connecting rod being mounted at its other end by a ball joint on an arm secured to the opposite spar or to a section of the opposite spar.
  • the articulated element is a lifting beam with three vertical pivots having a substantially vertical main pivot pivoting in the cross member, a first auxiliary pivot carrying a spar, and a second auxiliary pivot substantially disposed at 180 °, bearing a connecting rod mounted with ball joint and which extends substantially transversely to the vehicle, the connecting rod being mounted at its other end by a ball joint on an arm secured to the opposite spar or to a section of the opposite spar.
  • the articulated element consists of a substantially vertical pivot carried by a slide mounted on the cross member and terminated by a ball joint connected to a connecting rod, the latter being connected at its other end to an integral arm of the spar and extending substantially perpendicular to the spar.
  • the device according to the invention is designated as a whole by the reference sign 1.
  • This device is a deformable support intended to carry a body 2 or part of the body of a railway vehicle.
  • the support 1 is equipped with four independent wheels.
  • the floor is shown in phantom in Figures 1 and 2, in the vicinity of one end of the body 2.
  • the device 1 comprises a cross member 3 arranged perpendicular to the vertical plane containing the longitudinal axis XX 'of the body 2 and two longitudinal members 4, 44 which extend in the longitudinal direction of the body 2, on either side of the vertical plane containing the longitudinal axis XX ′.
  • Each of the side members 4 and 44 carries at least two motorized or non-motorized wheels, intended to roll on the same rail.
  • FIG. 1 shows wheels 5 and 55 carried by the beam 4 and the wheels 45 and 65 carried by the beam 44.
  • the cross member 3 is positioned relative to the body 2 of the vehicle by parallel connecting rods 32 mounted on ball joints 33, the lateral deflections being controlled by a damper 34 and stops 35.
  • Helical springs 36 or pneumatic means mounted between the cross member 3 and the body 2 as well as shock absorbers 41 mounted nearby provide a secondary suspension between the device 1 and the body 2 of the vehicle.
  • the spar 4 is coupled to the cross member 3 by means of an articulated element 7, so that it can pivot horizontally in the direction of the arrows Y.
  • the articulated element 7 consists of a crankshaft 8 whose main axis 37, substantially vertical, pivots in the cross member 3, a crankcase 38 pivots in the spar 4 and another crank 39 arranged substantially at 180 °, pivots in a connecting rod 9 by means of a ball joint 13.
  • the articulated element 7 is a lifting beam 17 carrying the cross member 3, so that it can pivot in a horizontal plane (in the direction of the arrows Y shown in Figure 1).
  • the lifter comprises three vertical pivots symbolized by the axes 37, 38 and 39.
  • the pivot 37 is carried by the cross member 3, the pivot 38 carries a spar 4 and the pivot 39 carries a connecting rod 9 via a ball joint 13 .
  • the articulated element 7 is constituted by a substantially vertical pivot 18 carried by a slide 19 mounted on the cross-member 3 and terminated by a ball joint 20 pivoting in a connecting rod 21.
  • the connecting rod 21 is articulated by means of another ball joint 20 on an arm 22 integral with the spar 44, this arm extending substantially perpendicular to the spars 4, 44.
  • the articulated element 47 consists of a spider 51 having a vertical pivot 52 which passes through the cross member 3 and a substantially horizontal pivot 53 which passes through the beam 44 with which, in plane, it is substantially perpendicular.
  • the spider 51 comprises an arm 12 directed substantially horizontally and perpendicular to the beam 44 towards the longitudinal axis of the bogie, this arm 12 carrying a ball 13 pivoting in the aforementioned connecting rod 9.
  • the articulated element 47 consists of a substantially vertical pivot 91 articulated on the cross-member 3 by means of ball joints 24 and 26 and a connecting rod 23 articulated on the cross-member 3 by means of the ball joint 25.
  • the pivot 91 and the connecting rod 23 allow the beam 44 to pivot horizontally in the direction of the arrows Y (FIG. 1) and tilt vertically in the direction of the arrows Z ( Figure 2).
  • the pivots of the direction of the side members 4 and 44 are coordinated by a second connecting rod 14 mounted on ball joints 15 on appendages 16 of the side members 4 and 44.
  • the position of the articulated elements 7 is chosen, in a transverse plane 47 relative to the wheels 5, 55 and 45, 65 on the beams 4.44 or beam sections 27, 28, 57, 58 so that rolling resistances, traction forces or differential braking forces between left wheels 5, 55 and right wheels 45, 65 determine a minimum torque around the vertical axes of the articulated elements 7, 47, the position of the articulated elements 7, 47 being furthermore chosen in the longitudinal plane so that masses carried by the cross-member 3 determine at the level of the wheels 5, 45 and 55, 65, the distribution of the masses desired to best ensure the grip requirements both in traction and in 'in braking and in such a way that the center of gravity of the bogie is located, in plan, as close as possible to the transverse axis connecting said articulated elements 7, 47.
  • Figure 3 illustrates the device 1 according to Figures 1 and 2 during the registration in a curve of the track.
  • the two beams 4 and 44 oscillate relative to the cross member 3 in a coordinated manner by the connecting rod 14 and in their pivoting the longitudinal members drive the arm 12, moving the ball joint 13 on an arc and driving the connecting rod 9.
  • the connecting rod 9 rotates the crankshaft 8 about its pivot 37 and therefore displaces the crankcase 38 and the spar 4 in a direction transverse to the rail 6 towards the outside of the track.
  • the displacement of the spar is substantially proportional to the radius of curvature of the track, thus correcting by this extra width imposed on the wheel support, the reduction in the distance between the spars resulting from their pivoting.
  • the substantially horizontal axis 53 allows the spar 44 to oscillate along the arrows Z, that is to say in a vertical plane longitudinal to the vehicle relative to the whole spar 4 and cross member 3 which have only one degree of directional freedom between them.
  • This degree of freedom eliminates any torsional stress on the side members and the cross member, regardless of whether the wheels are rigidly mounted or by means of primary suspensions on the side members 4 and 44.
  • FIG. 9 illustrates an alternative embodiment of the articulation assemblies in the device according to the invention.
  • an articulated element with crankshaft or spreader and an articulated element with ball joints are mounted on the side of the spar 4 while the spar 44 is mounted on a pivot. vertical.
  • the main vertical axis of the articulated element 7 carrying the spar 4 is secured to the cross member using the ball joints 24 and 26 and the connecting rod 23, in a manner similar to what is shown in FIG. 8.
  • the articulated element 7 thus has an additional degree of freedom thanks to which it is possible for this beam, not only to pivot horizontally in the direction of the arrows Y (FIG. 1), but also to tilt vertically in the direction of the arrows Z ( Figure 2) so as to resume an unevenness of the track.
  • the double degree of freedom of the spar 4 makes it possible to simplify the mounting of the spar 44 for which a simple vertical pivot 91 in the cross member 3 is sufficient to ensure the directional guidance of the spar 44, since the cross member 3, which carries this vertical pivot, can pivot to a certain extent around a substantially horizontal axis, transverse to the rail.
  • the articulated element 7 grants the spar 4 two degrees of freedom limited to the pivoting according to the arrows Y and Z above.
  • the third degree of freedom is eliminated by a support arm 23 mounted by ball joints 25 on the cross member 3 and by a ball joint 26 on the vertical axis which carries the spar 4.
  • each spar consists of two sections articulated around a substantially vertical pivot 29: the spar 4 comprises the sections 27 and 28, the spar 44 comprises sections 57 and 58.
  • Each section carries at least one wheel : the section 27 carries the wheel 5, the section 28 carries the wheel 45, the section 57 carries the wheel 55 and the section 58 carries the wheel 65.
  • a section of each beam is articulated on the cross-member 3: in FIG. 10, 1a section 27 is coupled by means of the articulated element 7 and section 57 is coupled by means of the articulated element 47.
  • the pivots of sections 27 and 57 are coordinated by the connecting rod 59 mounted by ball joints 15 on appendages 16 of the sections in question.
  • the pivots of sections 27, 28, 57 and 58 are coordinated by connecting rods 50 mounted on pivots 31 integral with sections 28 and 58 and by ball joints 15 on the aforementioned connecting rod 59.
  • each wheel 5, 55, 45, 65 independently of one another in order to allow it to approach as closely as possible the tangent to the section of rail on which it rests and thus ensuring correct registration of the device in the curve of the track.
  • the correction of extra width is done automatically as described above, the beam sections 27, 28 and 57, 58 being oriented so as to automatically align each wheel 5, 45, 55 and 65 tangentially to the portion of rail on which it rests.
  • the device according to the invention thus automatically and permanently maintains a nominal width between wheels corresponding to the width of the track and a perfect alignment of the wheels around the center of curvature of the track.
  • the vehicle body 2 is provided to provide a lowered circulation corridor of maximum width and to provide volumes allowing the installation of seats on either side of the circulation corridor in order to obtain the best levels of comfort, safe. rity and habitability, while ensuring its structural mission.
  • pads 42 are provided on the longitudinal members 4 and 44 (FIG. 1) or on the longitudinal member sections 27 and 57 (FIG. 10) in order to push the body 2 in a tight curve of so as not only to bring the body 2 in the axis of the cross 3, eliminating the transverse play of the suspension means 36 towards the outside of the curve, but also push the body 2 beyond the axis of the cross 3 by reducing said play towards the inside of the curve.
  • the body is therefore pushed towards the center of curvature of the track, which has the additional effect of reducing its size towards the outside of the curve.
  • Each wheel close to the articulation means 7 and therefore carrying a large portion of the masses, can be mounted on an independent geared motor unit 43 mounted on a beam 4 or 44 (see FIGS. 1 and 10).
  • the guidance and lift device which is the subject of the present invention can be provided with auxiliary equipment, such as motors, disc brakes, brakes with magnetic pad on rails, anti-derailment stops and so-called primary suspension means between wheels 5, 45, 55 and 65 and side members 4, 44.
  • auxiliary equipment such as motors, disc brakes, brakes with magnetic pad on rails, anti-derailment stops and so-called primary suspension means between wheels 5, 45, 55 and 65 and side members 4, 44.
  • the device according to the invention also makes it possible to conserve the numerous advantages already mentioned in the European patent 0 060 000 and the Belgian patent 8700527 cited above. It is particularly likely to be associated with the self-convergence device of the four wheels of the bogie towards the instantaneous center of rotation corresponding to the center of curvature of the track, as described in patent 8700527 so that perfect matching of width between wheels and their orientation can be obtained whatever the curvature of the track.
  • the device according to the invention adapts kinematically without revealing constraints or restoring efforts.
  • the distribution of the loads between the wheels 5, 45 is practically independent of the external elements such as the cant, the track unevenness and the body movements of the vehicle.
  • Dynamic stability is also improved and the risk of derailment is reduced.
  • it generates less noise and less wear on the wheels and rails in the curves of the track.
  • the longitudinal members 4 and 44 may have a shape different from that shown in the drawings and be for example rectilinear.
  • the wheels are then mounted on the same side of the beam.
  • the longitudinal members can also be carried by the cross member 3 so as to obtain a different distribution of the masses on their respective wheels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Handcart (AREA)
  • Steering Controls (AREA)

Abstract

Un dispositif constitué d'un support déformable équipé d'au moins quatre roues indépendantes (5, 55 et 45, 65) et comprenant une traverse horizontale (3) et deux longerons (4,44) pivotants et inclinables par rapport à la traverse (3).A device consisting of a deformable support equipped with at least four independent wheels (5, 55 and 45, 65) and comprising a horizontal crosspiece (3) and two longitudinal members (4,44) pivoting and tilting relative to the crosspiece ( 3).

Les deux longerons (4, 44) munis chacun d'au moins deux roues (5, 55 et 45, 65) et montés sur des éléments articulés (7,47) fixés à la traverse (3) de part et d'autre du plan vertical axial longitudinal du véhi­cule, de manière que les pivots d'articulation (par exemple 18, 38, 52, 91) des longerons (4, 44) aient des positions relatives variables. Il en résulte une com­pensation de la réduction de distance entre longerons (4, 44) survenant lors de leur pivotement et donc une adéquation constante entre l'écartement des roues (5, 45, 55, 65) et la largeur de la voie. The two longitudinal members (4, 44) each provided with at least two wheels (5, 55 and 45, 65) and mounted on articulated elements (7,47) fixed to the crosspiece (3) on either side of the longitudinal axial vertical plane of the vehicle, so that the articulation pivots (for example 18, 38, 52, 91) of the side members (4, 44) have variable relative positions. This results in compensation for the reduction in distance between beams (4, 44) occurring during their pivoting and therefore a constant match between the spacing of the wheels (5, 45, 55, 65) and the width of the track.

Description

La présente invention est relative à un disposi­tif articulé de guidage et de sustentation d'un véhi­cule ferroviaire, dispositif constitué d'un support déformable équipé d'au moins quatre roues indépendantes et comprenant une traverse horizontale assujettie à la caisse du véhicule de manière à être perpendiculaire à l'axe longitudinal de la caisse au voisinage d'une extrémité de cette caisse ainsi que deux longerons, munis chacun d'au moins deux roues et articulés sur la traverse de part et d'autre du plan vertical axial de manière à pouvoir pivoter horizonta­lement et s'incliner afin de permettre aux roues por­tées par les longerons de suivre les courbures de la voie et de franchir les inégalités de celle-ci.The present invention relates to an articulated device for guiding and supporting a railway vehicle, a device consisting of a deformable support equipped with at least four independent wheels and comprising a horizontal cross member secured to the body of the vehicle so as to be perpendicular to the longitudinal axis of the body in the vicinity of one end of this body as well as two side members, each provided with at least two wheels and articulated on the cross member on either side of the axial vertical plane so as to be able pivot horizontally and tilt to allow the wheels carried by the side members to follow the curvatures of the track and to overcome the unevenness of the latter.

Elle trouve sa principale application dans le transport urbain, notamment lorsque le parcours présente des courbes de faible rayon, lorsque l'infrastructure de la voie requiert des dispositifs de guidage et de sustentation légers et peu encombrants, ou encore lorsque des couloirs de circulation surbaissés et de largeur importante doivent être aménagés au droit desdits dispositifs.It finds its main application in urban transport, especially when the route has curves of small radius, when the track infrastructure requires light and space-saving guidance and lift devices, or even when low traffic corridors and of large width must be fitted to the right of said devices.

On connaît déjà un grand nombre de dispositifs de sustentation de véhicules ferroviaires aptes à assurer la stabilité dynamique de ces véhicules, tant en trajectoire rectiligne qu'en trajectoire courbe.A large number of lifting devices for railway vehicles are already known which are capable of ensuring the dynamic stability of these vehicles, both in rectilinear trajectory and in curved trajectory.

Le brevet européen n° 0060 000 décrit un dispositif de sustentation et de guidage d'un véhicule ferroviaire, équipé d'au moins quatre roues montées sur un support destiné à être assujetti à la caisse d'un véhicule, au voisinage d'une extrémité de cette caisse.European patent n ° 0060 000 describes a device for supporting and guiding a railway vehicle, equipped with at least four wheels mounted on a support intended to be secured to the body of a vehicle, in the vicinity of one end of this body.

Ce dispositif est constitué d'une traverse mainte­nue perpendiculaire au plan vertical contenant l'axe longitudinal du véhicule et de deux longerons disposés, en position de service, dans le sens longitudinal de la caisse, de part et d'autre du plan vertical axial susdit. Ces longerons sont reliés l'un à l'autre par l'intermédiaire d'une tringle montée sur des rotules. Ils sont articulés sur la traverse commune par des pivots verticaux susceptibles de prendre une certaine inclinaison dans un plan sensiblement vertical longitu­dinal. Ces pivots sont reliés entre eux par des rotules et un palonnier solidaire de la traverse au moyen d' un pivot perpendiculaire au plan formé par la traverse et l'axe longitudinal du véhicule.This device consists of a crosspiece held perpendicular to the vertical plane containing the longitudinal axis of the vehicle and two side rails arranged, in the service position, in the longitudinal direction of the body, on either side of the above-mentioned axial vertical plane. . These beams are connected to each other by means of a rod mounted on ball joints. They are articulated on the common crosspiece by vertical pivots capable of taking a certain inclination in a substantially vertical longitudinal plane. These pivots are connected to each other by ball joints and a lifter secured to the cross member by means of a pivot perpendicular to the plane formed by the cross member and the longitudinal axis of the vehicle.

Dans les courbes, les longerons pivotent par rapport à la traverse autour des pivots sensiblement verticaux et forment les côtés opposés d'un trapèze déformable, tandis que la traverse reste perpendiculaire à l'axe longitudinal de la caisse du véhicule.In the curves, the side members pivot relative to the cross member around the substantially vertical pivots and form the opposite sides of a deformable trapezoid, while the cross member remains perpendicular to the longitudinal axis of the vehicle body.

Le brevet belge 8700527 décrit un dispositif similaire à celui décrit dans le brevet européen précité. Chacun des deux longerons portant les roues indépendantes est constitué de deux sections articulées autour de pivots verticaux, chaque section portant au moins une roue et étant contrôlée directionnellement par un système de tringles montées à rotules.Belgian patent 8700527 describes a device similar to that described in the aforementioned European patent. Each of the two longitudinal members carrying the independent wheels consists of two sections articulated around vertical pivots, each section carrying at least one wheel and being controlled directionally by a system of rods mounted with ball joints.

Dans les courbes, les sections de chaque longeron pivotent par rapport à la traverse et par rapport l'un à l' autre et elles forment les côtés de deux trapèzes déformables, tandis que la traverse reste perpendiculaire à la caisse du véhicule, l'avantage de ce dispositif par rapport au précédent étant qu'il oriente chaque roue tangenttiellement à la portion de voie sur laquelle elle s'appuie.In the curves, the sections of each spar pivot with respect to the cross member and with respect to each other and they form the sides of two deformable trapezoids, while the crosspiece remains perpendicular to the vehicle body, the advantage of this device compared to the previous one being that it orientates each wheel tangentially to the portion of track on which it rests.

Dans les deux dispositifs précités, les longerons pivotent horizontalement autour de deux pivots dis­tincts et il en résulte que les distances entre les plans des roues gauches et droites diminuent progressi­vement au départ de la circulation en ligne droite pour atteindre, en courbes serrées, des valeurs incompati­bles avec celles de la voie. La circulation sur voie à faible rayon de courbure, avec rails à gorges et roues non usées est par conséquent rendue impossible sans créer des coincements et sans risquer des déraille­ments.In the two aforementioned devices, the side members pivot horizontally around two separate pivots and it follows that the distances between the planes of the left and right wheels progressively decrease from the start of straight line traffic to reach, in tight curves, incompatible values with those of the track. Driving on tracks with a small radius of curvature, with grooved rails and unworn wheels is therefore impossible without creating jams and risking derailments.

La présente invention vise à remédier à l' incon­venient précité. Elle propose un dispositif qui permet d'éloigner les pivots d'articulation des deux longerons en vue de compenser la perte d'écartement des longerons due au braquage de ceux-ci lors de l'inscription du véhicule dans une courbe et qui ramène les pivots d'articulation susdits à leur position initiale lorsque le véhicule quitte une courbe pour s'engager sur une ligne droite.The present invention aims to remedy the aforementioned drawback. It proposes a device which makes it possible to move the articulation pivots away from the two longitudinal members in order to compensate for the loss of spacing of the longitudinal members due to the deflection of the latter when the vehicle is registered in a curve and which returns the pivots of articulation aforesaid to their initial position when the vehicle leaves a curve to engage on a straight line.

Elle a pour objet un dispositif de guidage et de sustentation d'un véhicule ferroviaire constitué d'un support déformable à roues indépendantes susceptibles de pivoter autour d'axes verticaux de façon à s'orienter par paires ou indépendamment l'une de l'autre en fonction du tronçon de voie sur lequel elles s'appuient.It relates to a device for guiding and supporting a railway vehicle consisting of a deformable support with independent wheels capable of pivoting around vertical axes so as to be oriented in pairs or independently of one another depending on the section of track on which they are based.

Cet objectif est atteint selon l'invention par un dispositif essentiellement caractérisé en ce que la traverse présente à ses extrémités des pivots d'articu­lation de longerons ayant des positions relatives va­riables.This objective is achieved according to the invention by a device essentially characterized in that the cross member has at its ends hinge pivots of beams having variable relative positions.

Selon une particularité de l'invention, la traverse comporte au moins un élément articulé portant un des pivots d'articulation de longeron.According to a feature of the invention, the cross member comprises at least one articulated element carrying one of the hinge pivot pivots.

Les longerons peuvent être rigides ou constitués de sections articulées entre elles autour de pivots sensiblement verticaux, chaque section portant au moins une roue, une section de chaque longeron étant montée sur la traverse par un élément articulé.The longitudinal members can be rigid or consist of sections articulated together around substantially vertical pivots, each section carrying at least one wheel, a section of each longitudinal member being mounted on the cross member by an articulated element.

Dans une première forme d'exécution, un des élé­ments articulés comprend deux pivots verticaux dis­tincts, le premier permettant l'orientation direction­nelle du longeron par rapport à l'élément articulé, le second pivot permettant le pivotement de la traverse par rapport à l'élément articulé, et un moyen prévu pour recevoir une information et la transmettre à l' élément articulé de manière à permettre la correction de la distance entre les plans verticaux contenant les roues de chacun des longerons, lors de l'inscrip­tion du dispositif dans une courbe.In a first embodiment, one of the articulated elements comprises two separate vertical pivots, the first allowing the directional orientation of the spar relative to the articulated element, the second pivot allowing the pivoting of the cross member relative to the element articulated, and a means provided for receiving information and transmitting it to the articulated element so as to allow the correction of the distance between the vertical planes containing the wheels of each of the side members, when the device is registered in a curve.

Un élément articulé peut par exemple être consti­tué d'un vilebrequin à axes verticaux ayant un pivot principal pivotant dans la traverse, un manneton pivo­tant dans un longeron rigide ou une section de longe­ron, et un autre manneton disposé sensiblement à 180°, portant une bielle montée à rotule et s'étendant sensi­blement transversalement au véhicule, la bielle étant montée à son autre extrémité par une rotule sur un bras solidaire du longeron opposé ou d'une section du longe­ron opposé.An articulated element may for example consist of a crankshaft with vertical axes having a main pivot pivoting in the cross member, a crank pivoting in a rigid spar or a spar section, and another crank disposed substantially at 180 °, carrying a connecting rod ball joint mounted and extending substantially transversely to the vehicle, the connecting rod being mounted at its other end by a ball joint on an arm secured to the opposite spar or to a section of the opposite spar.

Dans une autre forme d'exécution, l'élément arti­culé est un palonnier à trois pivots verticaux ayant un pivot principal sensiblement vertical pivotant dans la traverse, un premier pivot auxiliaire portant un longe­ron, et un second pivot auxiliaire sensiblement disposé à 180°, portant une bielle montée à rotule et qui s'étend sensiblement transversalement au véhicule, la bielle étant montée à son autre extrémité par une rotule sur un bras solidaire du longeron opposé ou d'une section du longeron opposé.In another embodiment, the articulated element is a lifting beam with three vertical pivots having a substantially vertical main pivot pivoting in the cross member, a first auxiliary pivot carrying a spar, and a second auxiliary pivot substantially disposed at 180 °, bearing a connecting rod mounted with ball joint and which extends substantially transversely to the vehicle, the connecting rod being mounted at its other end by a ball joint on an arm secured to the opposite spar or to a section of the opposite spar.

Dans une autre forme d'exécution, l'élément arti­culé est constitué par un pivot sensiblement vertical porté par un coulisseau monté sur la traverse et terminé par une rotule connectée à une bielle, celle-ci étant connectée à son autre extrémité à un bras soli­daire du longeron et s'étendant sensiblement perpendi­culairement au longeron.In another embodiment, the articulated element consists of a substantially vertical pivot carried by a slide mounted on the cross member and terminated by a ball joint connected to a connecting rod, the latter being connected at its other end to an integral arm of the spar and extending substantially perpendicular to the spar.

D'autres particularités et détails de l'invention apparaîtront au cours de la description qui suit, faite en s'appuyant sur les dessins joints.Other features and details of the invention will appear during the description which follows, made on the basis of the accompanying drawings.

Dans ces dessins :

  • - la figure 1 est une vue en plan d'un mode de réa­lisation préféré du dispositif suivant l'inven­tion, sur trajectoire rectiligne:
  • - la figure 2 est une vue en élévation latérale du dispositif illustré à la figure 1;
  • - la figure 3 est une vue en plan analogue à celle de la figure 1, montrant le dispositif de la figure 1 s'inscrivant dans une courbe d'une voie ferroviaire.
  • - la figure 4 montre un élément articulé " à vile­brequin";
  • - la figure 5 montre un élément articulé " à palon­nier":
  • - la figure 6 montre un élément articulé "à coulis­seau";
  • - la figure 7 montre un élément articulé " à croi­sillon ":
  • - la igure 8 montre un élément articulé " à rotu­les";
  • - la figure 9 montre une variante d'exécution des éléments articulés dans le dispositif selon l'invention;
  • - la figure 10 est une vue en plan d'un deuxième mode de réalisation du dispositif selon l'inven­tion;
  • - la figure 11 est une vue analogue à celle de la figure 10 mais montrant le dispositif s'inscrivant dans une courbe d'une voie ferroviaire.
In these drawings:
  • FIG. 1 is a plan view of a preferred embodiment of the device according to the invention, on a rectilinear trajectory:
  • - Figure 2 is a side elevational view of the device illustrated in Figure 1;
  • - Figure 3 is a plan view similar to that of Figure 1, showing the device of Figure 1 forming part of a curve of a railway track.
  • - Figure 4 shows an articulated element "crankshaft";
  • - Figure 5 shows an articulated element "to spreader":
  • - Figure 6 shows an articulated element "slide";
  • - Figure 7 shows an articulated element "cross":
  • - Figure 8 shows an articulated element "with ball joints";
  • - Figure 9 shows an alternative embodiment of the articulated elements in the device according to the invention;
  • - Figure 10 is a plan view of a second embodiment of the device according to the invention;
  • - Figure 11 is a view similar to that of Figure 10 but showing the device forming part of a curve of a railway track.

Dans ces différentes figures, les mêmes signes de référence désignent des éléments identiques ou analo­gues.In these different figures, the same reference signs designate identical or analogous elements.

Comme illustré aux figures 1 et 2, le dispositif selon l'invention est désigné dans son ensemble par le signe de référence 1. Ce dispositif est un support déformable destiné à porter une caisse 2 ou une partie de caisse d'un véhicule ferroviaire. Le support 1 est équipé de quatre roues indépendantes.As illustrated in FIGS. 1 and 2, the device according to the invention is designated as a whole by the reference sign 1. This device is a deformable support intended to carry a body 2 or part of the body of a railway vehicle. The support 1 is equipped with four independent wheels.

Le plancher est montré en traits mixtes aux figu­res 1 et 2, au voisinage d'une extrémité de la caisse 2. Le dispositif 1 comprend une traverse 3 disposée perpendiculairement au plan vertical contenant l'axe longitudinal X-X' de la caisse 2 et deux longerons 4, 44 qui s'étendent dans la direction longitudinale de la caisse 2, de part et d'autre du plan vertical contenant l'axe longitudinal X-X'. Chacun des longerons 4 et 44 porte au moins deux roues motorisées ou non, destinées à rouler sur un même rail. La figure 1 montre des roues 5 et 55 portées par le longeron 4 et les roues 45 et 65 portées par le longeron 44.The floor is shown in phantom in Figures 1 and 2, in the vicinity of one end of the body 2. The device 1 comprises a cross member 3 arranged perpendicular to the vertical plane containing the longitudinal axis XX 'of the body 2 and two longitudinal members 4, 44 which extend in the longitudinal direction of the body 2, on either side of the vertical plane containing the longitudinal axis XX ′. Each of the side members 4 and 44 carries at least two motorized or non-motorized wheels, intended to roll on the same rail. FIG. 1 shows wheels 5 and 55 carried by the beam 4 and the wheels 45 and 65 carried by the beam 44.

La traverse 3 est positionnée par rapport à la caisse 2 du véhicule par des bielles parallèles 32 montées sur des rotules 33, les débattements latéraux étant controlés par un amortisseur 34 et des butées 35.The cross member 3 is positioned relative to the body 2 of the vehicle by parallel connecting rods 32 mounted on ball joints 33, the lateral deflections being controlled by a damper 34 and stops 35.

Des ressorts hélicoîdaux 36 ou des moyens pneumatiques montés entre la traverse 3 et la caisse 2 ainsi que des amortisseurs 41 montés à proximité assurent une suspension secondaire entre le dispositif 1 et la caisse 2 du véhicule.Helical springs 36 or pneumatic means mounted between the cross member 3 and the body 2 as well as shock absorbers 41 mounted nearby provide a secondary suspension between the device 1 and the body 2 of the vehicle.

Selon un premier mode de réalisation, le longeron 4 est couplé à la traverse 3 au moyen d'un élément articulé 7, de manière qu'il puisse pivoter horizonta­lement suivant le sens des flèches Y.According to a first embodiment, the spar 4 is coupled to the cross member 3 by means of an articulated element 7, so that it can pivot horizontally in the direction of the arrows Y.

Dans une première forme d'exécution (figure 4), l'élément articulé 7 est constitué par un vilebrequin 8 dont l'axe principal 37, sensiblement vertical, pivote dans la traverse 3, un manneton 38 pivote dans le longeron 4 et un autre manneton 39 disposé sensiblement à 180°, pivote dans une bielle 9 au moyen d' une rotule 13.In a first embodiment (Figure 4), the articulated element 7 consists of a crankshaft 8 whose main axis 37, substantially vertical, pivots in the cross member 3, a crankcase 38 pivots in the spar 4 and another crank 39 arranged substantially at 180 °, pivots in a connecting rod 9 by means of a ball joint 13.

Dans une deuxième forme d'exécution, illustrée à la figure 5, l'élément articulé 7 est un palonnier 17 portant la traverse 3, de manière qu'il puisse pivoter dans un plan horizontal (dans le sens des flèches Y montrées sur la figure 1). Le palonnier comprend trois pivots verticaux symbolisés par les axes 37, 38 et 39. Le pivot 37 est porté par la traverse 3, le pivot 38 porte un longeron 4 et le pivot 39 porte une bielle 9 par l'intermédiaire d'une rotule 13.In a second embodiment, illustrated in FIG. 5, the articulated element 7 is a lifting beam 17 carrying the cross member 3, so that it can pivot in a horizontal plane (in the direction of the arrows Y shown in Figure 1). The lifter comprises three vertical pivots symbolized by the axes 37, 38 and 39. The pivot 37 is carried by the cross member 3, the pivot 38 carries a spar 4 and the pivot 39 carries a connecting rod 9 via a ball joint 13 .

Dans une troisième forme d'exécution (figure 6), l'élément articulé 7 est constitué par un pivot 18 sensiblement vertical porté par un coulisseau 19 monté sur la traverse 3 et terminé par une rotule 20 pivotant dans une bielle 21. A son autre extrémité la bielle 21 est articulée au moyen d'une autre rotule 20 sur un bras 22 solidaire du longeron 44, ce bras s'étendant sensiblement perpendiculairement aux longerons 4, 44.In a third embodiment (FIG. 6), the articulated element 7 is constituted by a substantially vertical pivot 18 carried by a slide 19 mounted on the cross-member 3 and terminated by a ball joint 20 pivoting in a connecting rod 21. At its other end the connecting rod 21 is articulated by means of another ball joint 20 on an arm 22 integral with the spar 44, this arm extending substantially perpendicular to the spars 4, 44.

Revenant aux figures 1 et 2, on voit que sur le longeron de droite 44 est prévu un élément articulé 47 fixé à la traverse 3 de manière que le longeron puisse d'une part pivoter horizontalement dans le sens des flèches Y (fig. 1) et, d'autre part, s'incliner suivant les flèches Z (fig.2).Returning to Figures 1 and 2, we see that on the right spar 44 is provided an articulated element 47 fixed to the cross member 3 so that the spar can firstly pivot horizontally in the direction of the arrows Y (fig. 1) and, on the other hand, tilt according to the arrows Z (fig.2).

Dans une première forme d'exécution illustrée à la figure 7, l' élément articulé 47 est constitué d'un croisillon 51 présentant un pivot vertical 52 qui tra­verse la traverse 3 et un pivot sensiblement horizon­tal 53 qui traverse le longeron 44 avec lequel, en plan, il est sensiblement perpendiculaire. Le croisil­lon 51 comporte un bras 12 dirigé sensiblement horizon­talement et perpendiculairement au longeron 44 vers l'axe longitudinal du bogie, ce bras 12 portant une rotule 13 pivotant dans la bielle 9 précitée.In a first embodiment illustrated in Figure 7, the articulated element 47 consists of a spider 51 having a vertical pivot 52 which passes through the cross member 3 and a substantially horizontal pivot 53 which passes through the beam 44 with which, in plane, it is substantially perpendicular. The spider 51 comprises an arm 12 directed substantially horizontally and perpendicular to the beam 44 towards the longitudinal axis of the bogie, this arm 12 carrying a ball 13 pivoting in the aforementioned connecting rod 9.

Dans une seconde forme d'exécution illustrée à la figure 8, l'élément articulé 47 est constitué d'un pivot sensiblement vertical 91 articulé sur la traverse 3 au moyen de rotules 24 et 26 et d'une bielle 23 articulée sur la traverse 3 au moyen de la rotule 25. Le pivot 91 et la bielle 23 permettent au longeron 44 de pivoter horizontalement dans le sens des flèches Y (figure 1) et de s'incliner verticalement dans le sens des flèches Z (figure 2).In a second embodiment illustrated in FIG. 8, the articulated element 47 consists of a substantially vertical pivot 91 articulated on the cross-member 3 by means of ball joints 24 and 26 and a connecting rod 23 articulated on the cross-member 3 by means of the ball joint 25. The pivot 91 and the connecting rod 23 allow the beam 44 to pivot horizontally in the direction of the arrows Y (FIG. 1) and tilt vertically in the direction of the arrows Z (Figure 2).

Les pivotements de la direction des longerons 4 et 44 sont coordonnés par une seconde bielle 14 montée à rotules 15 sur des appendices 16 des longerons 4 et 44.The pivots of the direction of the side members 4 and 44 are coordinated by a second connecting rod 14 mounted on ball joints 15 on appendages 16 of the side members 4 and 44.

Suivant l'invention, on choisit la position des éléments articulés 7, dans un plan transversal 47 par rapport aux roues 5, 55 et 45, 65 sur les longerons 4,44 ou sections de longeron 27, 28, 57, 58 de manière que des résistances au roulement, des efforts de trac­tion ou des efforts de freinage différentiels entre roues gauches 5, 55 et droites 45, 65 déterminent un couple de rotation minimum autour des axes verticaux des éléments articulés 7, 47, la position des éléments articulés 7, 47 étant en outre choisie dans le plan longitudinal de manière que des masses portées par la traverse 3 déterminent au niveau des roues 5, 45 et 55, 65, la distribution des masses désirée pour assurer au mieux les besoins d'adhérence tant en traction qu'en freinage et de manière telle que le centre de gravité du bogie soit situé, en plan, le plus près possible de l'axe transversal reliant lesdits éléments articulés 7, 47.According to the invention, the position of the articulated elements 7 is chosen, in a transverse plane 47 relative to the wheels 5, 55 and 45, 65 on the beams 4.44 or beam sections 27, 28, 57, 58 so that rolling resistances, traction forces or differential braking forces between left wheels 5, 55 and right wheels 45, 65 determine a minimum torque around the vertical axes of the articulated elements 7, 47, the position of the articulated elements 7, 47 being furthermore chosen in the longitudinal plane so that masses carried by the cross-member 3 determine at the level of the wheels 5, 45 and 55, 65, the distribution of the masses desired to best ensure the grip requirements both in traction and in 'in braking and in such a way that the center of gravity of the bogie is located, in plan, as close as possible to the transverse axis connecting said articulated elements 7, 47.

La figure 3 illustre le dispositif 1 selon les figures 1 et 2 lors de l'inscription dans une courbe de la voie.Figure 3 illustrates the device 1 according to Figures 1 and 2 during the registration in a curve of the track.

Quelle que soit l'orientation de la courbure vers la gauche ou vers la droite, les deux longerons 4 et 44 oscillent par rapport à la traverse 3 de façon coordon­née par la bielle 14 et dans leurs pivotements les longerons entraînent le bras 12, déplaçant la rotule 13 sur un arc et entraînant la bielle 9.Whatever the orientation of the curvature to the left or to the right, the two beams 4 and 44 oscillate relative to the cross member 3 in a coordinated manner by the connecting rod 14 and in their pivoting the longitudinal members drive the arm 12, moving the ball joint 13 on an arc and driving the connecting rod 9.

La bielle 9 fait pivoter le vilebrequin 8 autour de son pivot 37 et déplace donc le manneton 38 et le longeron 4 dans une direction transversale au rail 6 vers l'extérieur de la voie. Le déplacement du longeron est sensiblement proportionnel au rayon de courbure de la voie, corrigeant ainsi par cette surlargeur imposée au support des roues, la diminution de la distance entre les longerons résultant de leur pivotement. Le support déformable équipé d'au moins quatre roues 5, 55 et 45, 65 selon l'invention, maintient donc automati­quement et en permanence entre les roues, une largeur nominale correspondant à la largeur de la voie.The connecting rod 9 rotates the crankshaft 8 about its pivot 37 and therefore displaces the crankcase 38 and the spar 4 in a direction transverse to the rail 6 towards the outside of the track. The displacement of the spar is substantially proportional to the radius of curvature of the track, thus correcting by this extra width imposed on the wheel support, the reduction in the distance between the spars resulting from their pivoting. The deformable support equipped with at least four wheels 5, 55 and 45, 65 according to the invention, therefore automatically and permanently maintains between the wheels, a nominal width corresponding to the width of the track.

Lors du franchissement d'une dénivellation de la voie, l'axe sensiblement horizontal 53 permet au longe­ron 44 d'osciller suivant les flèches Z, c'est-à-dire dans un plan vertical longitudinal au véhicule par rapport à l'ensemble du longeron 4 et de la traverse 3 qui ne présentent entre eux qu'un seul degré de liberté directionnelle. Ce degré de liberté élimine toute sol­licitation en torsion au niveau des longerons et de la traverse, indépendamment du fait que les roues sont montées rigidement ou par l'intermédiaire de suspen­sions primaires sur les longerons 4 et 44.When crossing a slope of the track, the substantially horizontal axis 53 allows the spar 44 to oscillate along the arrows Z, that is to say in a vertical plane longitudinal to the vehicle relative to the whole spar 4 and cross member 3 which have only one degree of directional freedom between them. This degree of freedom eliminates any torsional stress on the side members and the cross member, regardless of whether the wheels are rigidly mounted or by means of primary suspensions on the side members 4 and 44.

La figure 9 illustre une variante d'exécution des ensembles d'articulation dans le dispositif selon l'invention. Dans ce mode d'exécution, un élément articulé à vilebrequin ou à palonnier et un élément articulé à rotules sont montés du côté du longeron 4 tandis que le longeron 44 se trouve monté sur un pivot vertical. L'axe vertical principal de l'élément articu­lé 7 portant le longeron 4 est solidarisé à la traverse à l'aide des rotules 24 et 26 et de la bielle 23, d'une manière analogue à ce qui est montré à la figure 8. L'élément articulé 7 possède ainsi un degré de liberté supplémentaire grâce auquel il est permis à ce longeron, non seulement de pivoter horizontalement dans le sens des flèches Y (figure 1), mais aussi de s'in­cliner verticalement dans le sens des flèches Z (figure 2) de manière à reprendre une inégalité de la voie.FIG. 9 illustrates an alternative embodiment of the articulation assemblies in the device according to the invention. In this embodiment, an articulated element with crankshaft or spreader and an articulated element with ball joints are mounted on the side of the spar 4 while the spar 44 is mounted on a pivot. vertical. The main vertical axis of the articulated element 7 carrying the spar 4 is secured to the cross member using the ball joints 24 and 26 and the connecting rod 23, in a manner similar to what is shown in FIG. 8. The articulated element 7 thus has an additional degree of freedom thanks to which it is possible for this beam, not only to pivot horizontally in the direction of the arrows Y (FIG. 1), but also to tilt vertically in the direction of the arrows Z (Figure 2) so as to resume an unevenness of the track.

Le double degré de liberté du longeron 4 permet de simplifier le montage du longeron 44 pour lequel un simple pivot vertical 91 dans la traverse 3, suffit pour assurer le guidage directionnel du longeron 44, puisque la traverse 3, qui porte ce pivot vertical, peut pivoter dans une certaine mesure autour d'un axe sensiblement horizontal, transversal au rail. L'élé­ment articulé 7 accorde au longeron 4 deux degrés de liberté limités aux pivotements selon les flèches Y et Z précitées. Le troisième degré de liberté est supprimé par un bras-support 23 monté par des rotules 25 sur la traverse 3 et par une rotule 26 sur l'axe vertical qui porte le longeron 4.The double degree of freedom of the spar 4 makes it possible to simplify the mounting of the spar 44 for which a simple vertical pivot 91 in the cross member 3 is sufficient to ensure the directional guidance of the spar 44, since the cross member 3, which carries this vertical pivot, can pivot to a certain extent around a substantially horizontal axis, transverse to the rail. The articulated element 7 grants the spar 4 two degrees of freedom limited to the pivoting according to the arrows Y and Z above. The third degree of freedom is eliminated by a support arm 23 mounted by ball joints 25 on the cross member 3 and by a ball joint 26 on the vertical axis which carries the spar 4.

Les figures 10 et 11 illustrent un deuxième mode de réalisation du dispositif selon l'invention. Dans ce mode de réalisation, chaque longeron est constitué de deux sections articulées autour d'un pivot 29 sensiblement vertical : le longeron 4 comprend les sections 27 et 28, le longeron 44 comprend des sections 57 et 58. Chaque section porte au moins une roue : la section 27 porte la roue 5, la section 28 porte la roue 45, la section 57 porte la roue 55 et la section 58 porte la roue 65. Une section de chaque longeron est articulée sur la traverse 3 : à la figure 10, 1a section 27 est couplée au moyen de l'élément articulé 7 et la section 57 est couplée au moyen de l'élément articulé 47.Figures 10 and 11 illustrate a second embodiment of the device according to the invention. In this embodiment, each spar consists of two sections articulated around a substantially vertical pivot 29: the spar 4 comprises the sections 27 and 28, the spar 44 comprises sections 57 and 58. Each section carries at least one wheel : the section 27 carries the wheel 5, the section 28 carries the wheel 45, the section 57 carries the wheel 55 and the section 58 carries the wheel 65. A section of each beam is articulated on the cross-member 3: in FIG. 10, 1a section 27 is coupled by means of the articulated element 7 and section 57 is coupled by means of the articulated element 47.

Les pivotements des sections 27 et 57 sont coor­donnés par la bielle 59 montée par des rotules 15 sur des appendices 16 des sections en question. Les pivo­tements des sections 27, 28, 57 et 58 sont coordonnés par des bielles 50 montées sur des pivots 31 solidaires des sections 28 et 58 et par des rotules 15 sur la bielle 59 précitée.The pivots of sections 27 and 57 are coordinated by the connecting rod 59 mounted by ball joints 15 on appendages 16 of the sections in question. The pivots of sections 27, 28, 57 and 58 are coordinated by connecting rods 50 mounted on pivots 31 integral with sections 28 and 58 and by ball joints 15 on the aforementioned connecting rod 59.

Le pivotement des deux sections de chaque longeron autour d'un axe vertical permet d'orienter direction­nellement chaque roue 5, 55, 45, 65 indépendamment l'une de l'autre afin de lui permettre d'approcher au mieux de la tangeante à la section de rail sur laquelle elle s'appuie et donc en assurant une inscription cor­recte du dispositif dans la courbe de la voie.The pivoting of the two sections of each spar about a vertical axis makes it possible to orient each wheel 5, 55, 45, 65 independently of one another in order to allow it to approach as closely as possible the tangent to the section of rail on which it rests and thus ensuring correct registration of the device in the curve of the track.

Lors de l'inscription dans une courbe, la correc­tion de surlargeur se fait automatiquement tel que décrit plus haut, les sections de longeron 27, 28 et 57, 58 s'orientant de manière à aligner automatiquement chaque roue 5, 45, 55 et 65 tangentiellement à la portion de rail sur laquelle elle s'appuie. Le disposi­tif selon l'invention maintient ainsi automatiquement et en permanence une largeur nominale entre roues cor­respondant à la largeur de la voie et un alignement parfait des roues autour du centre de courbure de la voie.When entering in a curve, the correction of extra width is done automatically as described above, the beam sections 27, 28 and 57, 58 being oriented so as to automatically align each wheel 5, 45, 55 and 65 tangentially to the portion of rail on which it rests. The device according to the invention thus automatically and permanently maintains a nominal width between wheels corresponding to the width of the track and a perfect alignment of the wheels around the center of curvature of the track.

La caisse 2 du véhicule est prévue pour ménager un couloir de circulation surbaissé de largeur maximum et ménager des volumes permettant l'installation des sièges de part et d'autre du couloir de circulation afin d'obtenir les meilleurs niveaux de confort, sécu­ rité et habitabilité, tout en assurant sa mission structurelle.The vehicle body 2 is provided to provide a lowered circulation corridor of maximum width and to provide volumes allowing the installation of seats on either side of the circulation corridor in order to obtain the best levels of comfort, safe. rity and habitability, while ensuring its structural mission.

Afin d'augmenter la largeur du couloir de circula­tion, des patins 42 sont prévus sur les longerons 4 et 44 (figure 1) ou sur les sections de longeron 27 et 57 (figure 10) afin de repousser la caisse 2 dans une courbe serrée de manière à non seulement ramener la caisse 2 dans l'axe de la traverse 3, en supprimant le jeu transversal du moyen de suspension 36 vers l'exté­rieur de la courbe, mais également repousser la cais­se 2 au delà de l'axe de la traverse 3 en réduisant ledit jeu vers l'intérieur de la courbe. La caisse se trouve donc repoussée vers le centre de courbure de la voie, ce qui a pour effet complémentaire de réduire son gabarit vers l'extérieur de la courbe.In order to increase the width of the circulation corridor, pads 42 are provided on the longitudinal members 4 and 44 (FIG. 1) or on the longitudinal member sections 27 and 57 (FIG. 10) in order to push the body 2 in a tight curve of so as not only to bring the body 2 in the axis of the cross 3, eliminating the transverse play of the suspension means 36 towards the outside of the curve, but also push the body 2 beyond the axis of the cross 3 by reducing said play towards the inside of the curve. The body is therefore pushed towards the center of curvature of the track, which has the additional effect of reducing its size towards the outside of the curve.

Chaque roue proche des moyens d'articulation 7 et portant donc une part importante des masses, peut être montée sur un ensemble moto-réducteur 43 indépendant monté sur un longeron 4 ou 44 (voir figures 1 et 10).Each wheel close to the articulation means 7 and therefore carrying a large portion of the masses, can be mounted on an independent geared motor unit 43 mounted on a beam 4 or 44 (see FIGS. 1 and 10).

Le dispositif de guidage et de sustentation qui fait l'objet de la présente invention peut être muni d'équipements auxiliaires, tels que moteurs, freins à disques, freins à patin magnétique sur rails, butées anti-déraillement et moyen de suspension dite primaire entre roues 5, 45, 55 et 65 et longerons 4, 44.The guidance and lift device which is the subject of the present invention can be provided with auxiliary equipment, such as motors, disc brakes, brakes with magnetic pad on rails, anti-derailment stops and so-called primary suspension means between wheels 5, 45, 55 and 65 and side members 4, 44.

Le dispositif selon l'invention permet également de conserver les nombreux avantages déjà mentionnés dans le brevet européen 0 060 000 et le brevet belge 8700527 cités précédemment. Il est notamment suscepti­ble d'être associé au dispositif d'auto-convergence des quatre roues du bogie vers le centre instantané de rotation correspondant au centre de courbure de la voie, tel que décrit au brevet 8700527 de telle sorte que de parfaites adéquations de largeur entre roues et d'orientation de celles-ci puissent être obtenues quel­le que soit la courbure de la voie.The device according to the invention also makes it possible to conserve the numerous advantages already mentioned in the European patent 0 060 000 and the Belgian patent 8700527 cited above. It is particularly likely to be associated with the self-convergence device of the four wheels of the bogie towards the instantaneous center of rotation corresponding to the center of curvature of the track, as described in patent 8700527 so that perfect matching of width between wheels and their orientation can be obtained whatever the curvature of the track.

Le dispositif selon l'invention s'adapte cinémati­quement sans faire apparaître de contraintes ni d'ef­forts de rappel. De ce fait, la répartition des char­ges entre les roues 5, 45 est pratiquement indépendante des éléments extérieurs tels que le dévers, les inéga­lités de voie et les mouvements de caisse du véhicule. La stabilité dynamique est aussi améliorée et les ris­ques de déraillement sont réduits. En outre, il engen­dre moins de bruit et moins d'usure des roues et des rails dans les courbes de la voie.The device according to the invention adapts kinematically without revealing constraints or restoring efforts. As a result, the distribution of the loads between the wheels 5, 45 is practically independent of the external elements such as the cant, the track unevenness and the body movements of the vehicle. Dynamic stability is also improved and the risk of derailment is reduced. In addition, it generates less noise and less wear on the wheels and rails in the curves of the track.

Il est évident que l'invention n'est pas limitée aux détails décrits plus haut pour réaliser le pivotement, l'inclinaison et l'écartement des longerons 4, 44 et que de nombreuses modifications peuvent être apportées à ces détails sans sortir du cadre de l'invention.It is obvious that the invention is not limited to the details described above for carrying out the pivoting, the inclination and the spacing of the side members 4, 44 and that numerous modifications can be made to these details without departing from the scope of the invention.

Les longerons 4 et 44 peuvent présenter une forme différente de celle montrée dans les dessins et être par exemple rectilignes. Les roues sont alors montées du même côté du longeron. Les longerons peuvent égale­ment être portés par la traverse 3 de manière à obte­nir une distribution différente des masses sur leurs roues respectives.The longitudinal members 4 and 44 may have a shape different from that shown in the drawings and be for example rectilinear. The wheels are then mounted on the same side of the beam. The longitudinal members can also be carried by the cross member 3 so as to obtain a different distribution of the masses on their respective wheels.

Claims (16)

1. Dispositif articulé de guidage et de sustentation d'un véhicule ferroviaire, constitué d'un support déformable équipé d'au moins quatre roues indépendantes (5, 55 et 45, 65)et comprenant une traverse sensiblement horizontale (3) assujettie à une caisse (2) du véhicule de manière à être perpendiculaire au plan vertical contenant l'axe longitudinal (X, X') de la caisse (2) au voisinage d'une extrémité de celle-ci ainsi que deux longerons (4,44) munis chacun d'au moins deux roues (5,55 et 45,65 ) et articulés sur la tra­verse (3) de part et d'autre du plan vertical susdit, de manière à pouvoir pivoter horizontalement et pouvoir s'incliner afin de permettre aux roues de suivre les courbures de la voie et de franchir les inégalités de celle-ci, caractérisé en ce que la traverse (3) porte à ses extrémités des pivots d'articulation (par exemple 38, 52) de longerons (4, 44) ayant des positions relatives variables.1. Articulated device for guiding and supporting a railway vehicle, consisting of a deformable support equipped with at least four independent wheels (5, 55 and 45, 65) and comprising a substantially horizontal crosspiece (3) subject to a body (2) of the vehicle so as to be perpendicular to the vertical plane containing the longitudinal axis (X, X ') of the body (2) in the vicinity of one end thereof as well as two side members (4,44) each provided with at least two wheels (5.55 and 45.65) and articulated on the cross-member (3) on either side of the above-mentioned vertical plane, so as to be able to pivot horizontally and to be able to tilt in order to allow to the wheels to follow the curvatures of the track and to cross the unevenness of the latter, characterized in that the cross-member (3) carries at its ends articulation pivots (for example 38, 52) of longitudinal members (4, 44 ) with varying relative positions. 2. Dispositif selon la revendication 1, caractérisé en ce que la traverse (3) comporte au moins un élément articulé (7,47) portant un des pivots d'articulation (par exemple 38, 52) pour un longeron (4,44).2. Device according to claim 1, characterized in that the cross-member (3) comprises at least one articulated element (7,47) carrying one of the articulation pivots (for example 38, 52) for a spar (4,44) . 3. Dispositif selon la revendication 2, caractérisé en ce qu'un des éléments articulés (par exemple 7) com­prend :
deux pivots verticaux (38,37) distincts, le premier pivot (38) permettant le pivotement horizontal du longeron (4) par rapport à l'élément articulé (7), et le second pivot (37) permettant le pivotement de la traverse (3) par rapport à l'élément articulé (7); et un moyen (39, 9) prévu pour recevoir une information et la transmettre à l'élément articulé (7) de manière à corriger la distance entre les longerons (4, 44), lors de l'inscription du dispositif (1) dans une courbe.3. Device according to claim 2, characterized in that one of the articulated elements (for example 7) comprises:
two separate vertical pivots (38,37), the first pivot (38) allowing the horizontal pivoting of the beam (4) relative to the articulated element (7), and the second pivot (37) allowing the pivoting of the crosspiece ( 3) relative to the articulated element (7); and means (39, 9) provided for receiving information and transmitting it to the articulated element (7) so as to correct the distance between the side members (4, 44), when the device (1) is registered in a curve. 4. Dispositif selon l'une ou l'autre des revendica­tions précédentes, caractérisé en ce que chaque longeron (4,44) est constitué par des sections (27,57 et 28,58) articulées entre elles autour de pivots (29) sensiblement verticaux, chaque section portant au moins une roue (5,45,55,65).4. Device according to either of the preceding claims, characterized in that each spar (4,44) consists of sections (27,57 and 28,58) hinged together around pivots (29) substantially vertical, each section carrying at least one wheel (5,45,55,65). 5. Dispositif selon la revendication 3, caractérisé en ce que le moyen destiné à recevoir une information est un troisième pivot (39) actionné par une bielle (9).5. Device according to claim 3, characterized in that the means for receiving information is a third pivot (39) actuated by a connecting rod (9). 6. Dispositif selon la revendication 5, caractérisé en ce que l'élément articulé (7) comprenant trois pivots verticaux (37,38,39) est un vilebrequin (8) ayant un pivot principal (37) sensiblement vertical pivotant dans la traverse (3), un manneton (38) pivo­tant dans le longeron (4) et un autre manneton (39) disposé sensiblement à 180°, portant une bielle (9) montée à rotule et qui s'étend sensiblement transver­salement au véhicule, ladite bielle (9) étant montée à son autre extrémité par une rotule (13) sur un bras (12) connecté au longeron opposé (44) ou à une sec­tion (57) du longeron opposé (44).6. Device according to claim 5, characterized in that the articulated element (7) comprising three vertical pivots (37,38,39) is a crankshaft (8) having a main pivot (37) substantially vertical pivoting in the cross member ( 3), a crankcase (38) pivoting in the beam (4) and another crankcase (39) disposed substantially at 180 °, carrying a rod (9) mounted with ball joint and which extends substantially transversely to the vehicle, said rod ( 9) being mounted at its other end by a ball joint (13) on an arm (12) connected to the opposite spar (44) or to a section (57) of the opposite spar (44). 7. Dispositif selon la revendication 5, caractérisé en ce que l'élément articulé (7) comprenant trois pi­vots verticaux est un palonnier (17) ayant un pivot principal (37) sensiblement vertical pivotant dans la traverse (3), un premier pivot auxiliaire (38) portant un longeron (4) et un second pivot auxiliaire (39) sensiblement disposé à 180°, portant une bielle (9) montée à rotule (13) et qui s'étend sensiblement trans­versalement au véhicule, ladite bielle (9) étant montée à son autre extrémité par une rotule (13) sur un bras (12) connecté au longeron opposé (44) ou à une section (57) du longeron opposé (44).7. Device according to claim 5, characterized in that the articulated element (7) comprising three vertical pivots is a lifting beam (17) having a main pivot (37) substantially vertical pivoting in the crosspiece (3), a first auxiliary pivot (38) carrying a spar (4) and a second auxiliary pivot (39) substantially disposed at 180 °, carrying a rod (9) mounted with ball joint (13) and which extends substantially transversely to the vehicle, said rod (9) being mounted at its other end by a ball joint (13) on an arm (12) connected to the opposite spar (44) or to a section (57) of the opposite spar (44). 8. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la traverse (3) comprend un coulisseau (19) capable de se déplacer le long d'une portion de sa longueur.8. Device according to claim 1 or 2, characterized in that the crosspiece (3) comprises a slide (19) capable of moving along a portion of its length. 9. Dispositif selon la revendication 8, caractérisé en ce que l'élément articulé (7) est constitué par un pivot (18) sensiblement vertical porté par le coulis­seau (19) monté sur la traverse (3) et terminé par une rotule (20), connectée à une bielle (21), ladite bielle 521) portant à son autre extrémité une seconde rotule (20) connectée à un bras extérieur (22) solidaire du longeron (44) et s'étendant sensiblement perpendiculai­rement aux longerons (4,44).9. Device according to claim 8, characterized in that the articulated element (7) consists of a pivot (18) substantially vertical carried by the slide (19) mounted on the crosspiece (3) and terminated by a ball joint (20 ), connected to a connecting rod (21), said connecting rod 521) carrying at its other end a second ball joint (20) connected to an outer arm (22) integral with the spar (44) and extending substantially perpendicular to the spars (4, 44). 10. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'élément articulé (47) est constitué d'une rotule (24) pivotant dans la traverse (3) dont les degrés de liberté sont limités aux pivote­ments horizontaux (Y) et aux inclinaisons verticales (Z) et dont le troisième degré de liberté est supprimé par la bielle (23) montée à rotules (25,26) d'une part sur la traverse (3) et d'autre part sur le longeron (44).10. Device according to claim 1 or 2, characterized in that the articulated element (47) consists of a ball joint (24) pivoting in the crosspiece (3) whose degrees of freedom are limited to the horizontal pivotings (Y) and vertical inclinations (Z) and whose third degree of freedom is eliminated by the connecting rod (23) mounted with ball joints (25,26) on the one hand on the cross-member (3) and on the other hand on the spar (44). 11. Dispositif selon la revendication 6 ou 7, caracté­risé en ce que le pivot vertical principal (37) de l'élément articulé (7) est monté à l'extrémité supé­rieure de la traverse (3) par une rotule (24) et à l' extrémité inférieure de la traverse (3) par une bielle (23) sensiblement horizontale articulée sur le pivot principal (37) et sur la traverse (3) par des rotules (26,25) de manière à permettre au longeron (4) de pivoter horizontalement (Y) et de s'incliner (Z).11. Device according to claim 6 or 7, characterized in that the main vertical pivot (37) of the articulated element (7) is mounted at the upper end of the crosspiece (3) by a ball joint (24) and at the lower end of the cross member (3) by a substantially horizontal connecting rod (23) articulated on the main pivot (37) and on the cross member (3) by ball joints (26,25) so as to allow the spar (4) pivot horizontally (Y) and tilt (Z). 12. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'élément articulé (47) est constitué par un croisillon (51) ayant un pivot sensi­blement vertical (52) pivotant dans la traverse (3) et un pivot sensiblement horizontal (53) pivotant dans le longeron (44) avec lequel, en plan, il est sensiblement perpendiculaire, et par un bras (12) dirigé sensiblement horizontalement et perpendiculairement au longeron (44) vers l'axe longitudinal (X,X') du dispositif (1), ledit bras (12) portant une rotule (13) pivotant dans la bielle (9) précitée.12. Device according to claim 1 or 2, characterized in that the articulated element (47) consists of a spider (51) having a substantially vertical pivot (52) pivoting in the crosspiece (3) and a substantially horizontal pivot ( 53) pivoting in the beam (44) with which, in plan, it is substantially perpendicular, and by an arm (12) directed substantially horizontally and perpendicular to the beam (44) towards the longitudinal axis (X, X ') of the device (1), said arm (12) carrying a ball joint (13) pivoting in the aforementioned connecting rod (9). 13. Dispositif selon l'une quelconque des revendica­tions précédentes, caractérisé en ce que des patins (42) solidaires des longerons (4, 44) ou de sections de longerons (27,57) sont prévus pour repousser la caisse (2) vers le centre de courbure de la voie à l'encontre de la force centrifuge et réduire les libertés de la caisse (2) du véhicule de façon à permettre l'aménage­ment d'un couloir de circulation plus large pour un gabarit extérieur prédéterminé.13. Device according to any one of the preceding claims, characterized in that pads (42) integral with the side members (4, 44) or sections of side members (27, 57) are provided for pushing the body (2) towards the center of curvature of the track against centrifugal force and reduce the freedoms of the vehicle body (2) so as to allow the development of a wider circulation corridor for a predetermined external gauge. 14. Procédé pour guider et sustenter un véhicule ferroviaire sur un réseau de rails à écartement constant à l'aide d'un dispositif articulé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'on déplace au moins un des éléments articulés (7) couplant les longerons (4, 44) à la traverse (3) de part et d'autre du plan vertical axial longitudinal, de manière à compenser en courbe, la réduction de la distance entre les longerons (4, 44).14. Method for guiding and supporting a railway vehicle on a network of rails with constant spacing using an articulated device according to any one of the preceding claims, characterized in that at least one of the articulated elements is moved ( 7) coupling the side members (4, 44) to the cross member (3) on either side of the longitudinal axial vertical plane, so as to compensate in the curve, the reduction in the distance between the side members (4, 44). 15. Procédé selon la revendication 14, caractérisé en ce qu'on modifie la position relative des pivots d'ar­ticulation (par exemple 18,38,52, 91) des deux longe­rons (4,44) en fonction de l'orientation directionnelle desdits longerons.15. Method according to claim 14, characterized in that the relative position of the articulation pivots (for example 18,38,52, 91) of the two beams (4,44) is modified as a function of the directional orientation of the said beams. stringers. 16. Procédé selon les revendications 14 et 15, carac­térisé en ce qu'on choisit la position des éléments articulés (7, 47) dans un plan transversal par rapport aux roues (5,55 et 45,65) sur les longerons (4,44) ou sections de longeron (27, 28, 57, 58), de manière que des résistances au roulement, des efforts de traction ou des efforts de freinage différentiels entre roues gauches (5,55) et droites (45,65) déterminent un couple de rotation minimum autour des axes verticaux des élé­ments articulés (7, 47), la position des éléments arti­culés (7, 47) étant en outre choisie dans le plan longitudinal de manière que des masses portées par la traverse (3) déterminent, au niveau des roues (5, 45 et 55, 65), la distribution des masses désirée pour assu­rer au mieux les besoins d'adhérence tant en traction qu'en freinage et de manière telle que le centre de gravité du bogie soit situé, en plan, le plus près possible de l'axe transversal reliant lesdits éléments articulés (7, 47).16. Method according to claims 14 and 15, characterized in that the position of the articulated elements (7, 47) is chosen in a transverse plane relative to the wheels (5,55 and 45,65) on the side members (4, 44) or spar sections (27, 28, 57, 58), so that rolling resistances, traction forces or differential braking forces between left (5,55) and right (45,65) wheels a minimum torque around the vertical axes of the articulated elements (7, 47), the position of the articulated elements (7, 47) being also chosen in the longitudinal plane so that masses carried by the crossmember (3) determine, at the wheels (5, 45 and 55, 65), the desired mass distribution to best ensure the grip needs both in traction and in braking and in such a way that the center of gravity of the bogie is located, plane, as close as possible to the transverse axis connecting said articulated elements (7, 47).
EP89870098A 1988-06-22 1989-06-21 Articulated device for guiding and sustaining a railway vehicle Expired - Lifetime EP0348378B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89870098T ATE67720T1 (en) 1988-06-22 1989-06-21 ARTICULATED DEVICE FOR GUIDING AND SUPPORTING A RAILWAY VEHICLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8800714A BE1001811A3 (en) 1988-06-22 1988-06-22 Joint guidance and device for a rail vehicle lift.
BE8800714 1988-06-22

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EP0348378A1 true EP0348378A1 (en) 1989-12-27
EP0348378B1 EP0348378B1 (en) 1991-09-25

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US (1) US5042394A (en)
EP (1) EP0348378B1 (en)
AT (1) ATE67720T1 (en)
BE (1) BE1001811A3 (en)
CA (1) CA1321104C (en)
DE (1) DE68900283D1 (en)
ES (1) ES2027069T3 (en)

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WO1992008635A1 (en) * 1990-11-12 1992-05-29 Bombardier Eurorail S.A. Railway axle with orientable wheels and variable width
ES2078137A1 (en) * 1992-09-30 1995-12-01 Invastesa Bogies for railway vehicles with variable gap between wheels.
EP0681541A4 (en) * 1993-02-03 1996-05-01 Bishop Arthur E Self-steering railway bogie.
EP0763454A3 (en) * 1995-09-14 1998-04-15 Siemens SGP Verkehrstechnik GmbH Running gear for a railway vehicle especially for a low-floor railway vehicle
JP2007331713A (en) * 2006-06-19 2007-12-27 Kawasaki Heavy Ind Ltd Cart for low-floor railway vehicles
JP2007331461A (en) * 2006-06-13 2007-12-27 Kawasaki Heavy Ind Ltd Single-axis bogie truck with guide wheels for low-floor railway vehicles
WO2009063569A1 (en) 2007-11-16 2009-05-22 Kawasaki Jukogyo Kabushiki Kaisha Bogie for low floor type railway vehicle and low floor type railway vehicle with the same
EP2184214A4 (en) * 2007-07-30 2013-01-02 Univ Tokyo Self-steering platform car

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DE4238574A1 (en) * 1992-11-16 1994-05-19 Abb Henschel Waggon Union Chassis for low-floor railways
JP5121191B2 (en) * 2006-09-05 2013-01-16 川崎重工業株式会社 Low-floor railway vehicles and low-floor trams
CN108190739B (en) * 2018-01-18 2023-10-13 四川省公路规划勘察设计研究院有限公司 Test piece rail transfer conveying device of experiment loading system and hoisting method
AU2024219668B1 (en) * 2024-09-12 2025-09-11 Brian Clifford Arthur Bruce Soft suspension railway bogie

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DE3342968A1 (en) * 1983-09-19 1984-03-29 Fritz Prof. Dr.-Ing. 4150 Krefeld Frederich Double bogie for rail vehicles
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008635A1 (en) * 1990-11-12 1992-05-29 Bombardier Eurorail S.A. Railway axle with orientable wheels and variable width
BE1003970A3 (en) * 1990-11-12 1992-07-28 Bn Const Ferroviaires Et Metal RAILWAY AXLE WITH ADJUSTABLE WHEELS AND VARIABLE WIDTH.
AU657101B2 (en) * 1990-11-12 1995-03-02 Bombardier Eurorail S.A. Railway axle with orientable wheels and variable width
US5582111A (en) * 1990-11-12 1996-12-10 Bombardiere Eurorail S.A. Railway axle with orientable wheels and variable width
ES2078137A1 (en) * 1992-09-30 1995-12-01 Invastesa Bogies for railway vehicles with variable gap between wheels.
EP0681541A4 (en) * 1993-02-03 1996-05-01 Bishop Arthur E Self-steering railway bogie.
EP0763454A3 (en) * 1995-09-14 1998-04-15 Siemens SGP Verkehrstechnik GmbH Running gear for a railway vehicle especially for a low-floor railway vehicle
JP2007331461A (en) * 2006-06-13 2007-12-27 Kawasaki Heavy Ind Ltd Single-axis bogie truck with guide wheels for low-floor railway vehicles
JP2007331713A (en) * 2006-06-19 2007-12-27 Kawasaki Heavy Ind Ltd Cart for low-floor railway vehicles
EP2184214A4 (en) * 2007-07-30 2013-01-02 Univ Tokyo Self-steering platform car
WO2009063569A1 (en) 2007-11-16 2009-05-22 Kawasaki Jukogyo Kabushiki Kaisha Bogie for low floor type railway vehicle and low floor type railway vehicle with the same

Also Published As

Publication number Publication date
DE68900283D1 (en) 1991-10-31
BE1001811A3 (en) 1990-03-13
ES2027069T3 (en) 1992-05-16
US5042394A (en) 1991-08-27
EP0348378B1 (en) 1991-09-25
CA1321104C (en) 1993-08-10
ATE67720T1 (en) 1991-10-15

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